Volume analysis: what it confirms (and the forex catch)
Volume measures how much activity is behind a price move. Used well, it separates a move with conviction from a puff of smoke. But in forex it hides a catch almost nobody tells you about — worth knowing before you trust it.
What volume tells you
The basic idea: a move backed by high volume has more participants pushing and tends to be more reliable; a move on low volume can be a mirage that unwinds quickly. Two classic uses:
- Confirming breakouts: a resistance breakout on high volume is more credible than one on weak volume (more likely a trap).
- Spotting exhaustion: a huge volume spike after a long trend can mark the climax — the last push before the turn.
The spot-forex catch: the volume you see is NOT real. The spot currency market is decentralised: there's no single exchange counting the contracts. So your platform doesn't show real volume, it shows "tick volume": how many times the price changed in each candle, not how much money moved. It correlates with activity, but it is NOT true volume. Only futures (e.g. euro futures on the CME) and stocks have real, centralised volume. Trusting your forex broker's "volume" as if it were real money is one of the most common self-deceptions.
How to use it without fooling yourself
- In forex, treat it as activity, not money. Tick volume shows when there's more movement (it lines up with the active sessions), not how much capital is behind it.
- As confirmation, never as a lone signal. Volume supports an idea you already have from price and structure; don't trade "because volume rose".
- For real volume, look at futures. Many forex traders watch currency-futures volume as a proxy for the market's "real" volume.
- Distrust "magic volume indicators". In forex they're built on tick volume; they inherit its limitation no matter how technical the name.